Standard display
Press and hold the 
button on
the
steering wheel until the Trip menu with
odometer 1 and trip odometer 2 is
shown.
See also:
SmartKey
Display messages
Key Does Not
Belong to Vehicle
Possible causes/consequences and ►
Solutions
You have put the wrong SmartKey in the ignition lock.
► Use the correct SmartKey.
Disp ...
Roadside Assistance button
– Press and hold Roadside Assistance
button 1 for more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in Roadside Assistance but ...
Hiding a service message
► Press the R reset button on the
instrument cluster. ...